Year	current US$
1968	23296990661.549988
1969	26321426565.540783
1970	29403597652.26158
1971	33161859666.379467
1972	37701265512.05214
1973	47836064857.66459
1974	66003644900.707436
1975	83993148168.85966
1976	95949363116.90839
1977	107831996603.02013
1978	127370173377.74516
1979	149253791133.11362
1980	173792457269.52383
1981	203247224996.0885
1982	205390893733.68567
1983	200557588838.53427
1984	198493264570.70297
1985	202053601097.88608
1986	206133766104.32187
1987	206703927374.38635
1988	209278623029.2535
1989	212338839921.31427
1990	236198514863.77112
1991	257919482121.0186
1992	277161322064.2834
1993	311429254718.37524
1994	316263164245.28296
1995	319781208405.6537
1996	341520910595.5737
1997	373807024987.1699
1998	376138868290.95605
1999	398691724987.31146
2000	430037815469.32697
2001	435363086155.236
2002	413924571887.1803
2003	462297793540.20374
2004	522752337187.09674
2005	598553866367.0134
2006	683833702404.6403
2007	794563154012.0367
2008	904187911298.9102
2009	965152843745.1542
2010	1119421886086.7258
2011	1289374718262.4995
2012	1361984794541.0662
2013	1399975179004.9966
2014	1486609888999.1628
2015	1444835033246.2715
2016	1441603767292.0083
2017	1540490033091.247
2018	1541750822340.0764
2019	1568449179797.7578
2020	1560609181911.84
2021	1671776048702.6099
2022	1766021973824.082
2023	1892925646602.3071